Yeah, this is something everyone needs to figure out for themselves. For what it's worth WM also sells wider bags, but personally I love the tight fit of my Ultralight. I like that it's never drafty, even if I don't have the draft collar and hood cinched, but I'm absolutely content to sleep with my hands either crossed over my chest or by my sides, and I usually sleep with my legs crossed anyways. Other people like to twist into weird pretzel shapes with their legs in a figure 4.

Quilts are interesting, if I didn't have super sweet sleeping bags already I'd check it out, but I have to admit I'm pretty attached and dialed into sleeping bags. I'm generally down for ultralight nonsense.